<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="app">
      <ul v-for="(item,index) in list" :key="item.id">
        <li>{{item.text}}</li>
      </ul>
      <button @click="change">走一走</button>
    </div>
    <script src="./vue.js"></script>
    <script>
      const app = new Vue({
        el: "#app",
        data: {
          list: [
            { id: 1, text: "帅哥" },
            { id: 2, text: "美女" },
            { id: 3, text: "程序猿" },
          ],
        },
        methods: {
          change() {
            this.list.push(this.list.shift());
          },
        },
      });
    </script>
  </body>
</html>
